| 1. extinct |
A type of oxygen that is produced by electricity and is in the air, mostly after a thunderstorm. |
| 2. pollution |
A specific dwelling place where an animal lives. |
| 3. ozone |
The process or act of defiling. |
| 4. endangered
species |
The idea that all things living developed from very few simple life forms through several physical changes. |
| 5. poacher |
A specific species that is at risk for extinction due to natural and human forces. |
| 6. conservation |
The combination of smoke and fog in the air. |
| 7. evolution |
The specific gas that surrounds the earth. |
| 8. smog |
Something that eliminates insects. |
| 9. habitat |
A person who trespasses, usually to hunt or fish illegally. |
| 10. atmosphere |
When something is completely gone and doesn't return. |
| 11. insecticide |
The retention of radiation from the sun into the earth's atmosphere that creates a rise in the temperature of the earth's surface. |
| 12. biosphere |
The area that surrounds the earth that may support life. |
| 13. greenhouse
effect |
The act of preserving; to keep from being used up or lost. |